Jawabanmu

Jawaban paling cerdas!
2014-03-14T20:02:05+07:00
PR : OQ = 1:2
PR = 1/2 x OQ

QR² = OP² - (PR+OQ)²
12² = 15² - (1/2 x OQ + OQ)²
3/2 x OQ =√(225-144)
OQ = 9 x 2/3 = 6 cm